longest.chain: find out the food chain with longest length among all food...
In loop: loop decomposition of weighted directed graphs for life cycle analysis, providing flexbile network plotting methods, and analyzing food chain properties in ecology

Description Usage Arguments Author(s) References See Also Examples

View source: R/loop.R

Sometimes the longest chain is not unique, thus will return all candidates with longest length

1	longest.chain(gemat, sp)

`gemat`	standard square graph matrix
`sp`	the node/species you want to search

Youhua Chen <haydi@126.com>

Chen Y (2012) loop: an R package for performing decomposition of weighted directed graphs, food web analysis and flexible network plotting. Submitted.

shortest.chain, largest.weight, smallest.weight, lclw

#mat=matrix(c(0,5,3,7,0,5,0,8,0,4,3,8,0,1,6,7,0,1,0,2,0,4,6,2,0),5,5)
#search for species 3
#lclw(gemat=mat,sp=3)
#longest chain isn't necessary to have largest weights
#largest.weight(gemat=mat,sp=3)
#longest.chain(gemat=mat,sp=3)